$ git clone -n https://src.fedoraproject.org/rpms/crun.git /var/lib/mock/f42-build-side-1-3582563-46885/root/chroot_tmpdir/scmroot/crun
Cloning into '/var/lib/mock/f42-build-side-1-3582563-46885/root/chroot_tmpdir/scmroot/crun'...
$ git fetch origin aeefc28b2dce0ae2343ee32c5f8f749fea2e3852:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/crun
 * [new ref]         aeefc28b2dce0ae2343ee32c5f8f749fea2e3852 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aeefc28 Update to 1.22 upstream release